Adding Push Button to GraphicWindow

[magnetism87]

Is there a way to add a push button to a GraphicWindow object? I have a GraphicWindow that is plotting realtime data, and I would like to add a "Pause" button to pause the plot. 

Currently, I create my GraphicWindow this way, but the last two lines throw an error when I try to add a QPushButton. I'd appreciate any advice:

from pyqtgraph.Qt import QtGui, QtCore

import numpy as np

import pyqtgraph as pg
...

win = pg.GraphicsWindow(title="Basic plotting examples")
win.resize(1000,600)
win.setWindowTitle('pyqtgraph example: Plotting')

pg.setConfigOptions(antialias=True)

label = pg.LabelItem(justify='center')

win.addItem(label)

p6 = win.addPlot(title="Updating plot", row=1, col=0)

curve = p6.plot(pen='y', shadowPen=pg.mkPen(cosmetic=False, width=4.5, color='r'))

curve.setShadowPen(color='r', width=3)

curve.setFillLevel(100)

p6.enableAutoRange('xy', False)

p6.setXRange(0,100)

p6.setYRange(0,1200)

p6.showGrid(1,1)

pauseBtn = QtGui.QPushButton('Pause')

win.addItem(pauseBtn)

[Luke Campagnola]

On Thu, Mar 27, 2014 at 10:44 AM, magnetism87 <magne...@gmail.com> wrote:

Is there a way to add a push button to a GraphicWindow object? I have a GraphicWindow that is plotting realtime data, and I would like to add a "Pause" button to pause the plot. 

Currently, I create my GraphicWindow this way, but the last two lines throw an error when I try to add a QPushButton. I'd appreciate any advice:

To embed a QWidget inside QGraphicsView, you first need to wrap it in a QGraphicsProxyWidget. See: http://qt-project.org/doc/qt-4.8/qgraphicsproxywidget.html

Another option is to simply position the button over the view (for example, `button.setParent(view)`) rather than placing it inside the view.

[magnetism87]

Thank you, Luke. The setParent() function was what I was looking for. Also, for anyone else with the same problem, you also have to call button.show() after setParent() to have the button be displayed